Augelite and Staurolite Physical Properties

Augelite

Staurolite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.70-2.753.7-3.8

1 7.18

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Fracture

Conchoidal

Subconchoidal, Conchoidal

Cleavage

From the Greek for luster, for its pearly luster on the cleavage.

Distinct on {010}

Mohs Hardness

4.5-57-7.5

2 10

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Chemical Composition

Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Augelite and Staurolite Chemical Formula

While comparing Augelite and Staurolite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Augelite and Staurolite chemical formula.

Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Compare Colorless Gems

Augelite Vs Beryl

Augelite Vs Beryllonite

Augelite Vs Black Opal

Augelite and Staurolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augelite and Staurolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augelite and Staurolite Optical Properties during the identification of gemstone. Specific gravity of Augelite is 3.7-3.8 whereas that of Staurolite is 3.7-3.8.